1013201121 has 4 divisors (see below), whose sum is σ = 1350934832. Its totient is φ = 675467412.

The previous prime is 1013201113. The next prime is 1013201153. The reversal of 1013201121 is 1211023101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1013201121 - 2³ = 1013201113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013201097 and 1013201106.

It is not an unprimeable number, because it can be changed into a prime (1013202121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168866851 + ... + 168866856.

It is an arithmetic number, because the mean of its divisors is an integer number (337733708).

Almost surely, 2^1013201121 is an apocalyptic number.

It is an amenable number.

1013201121 is a deficient number, since it is larger than the sum of its proper divisors (337733711).

1013201121 is an equidigital number, since it uses as much as digits as its factorization.

1013201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337733710.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1013201121 is about 31830.8203004572. The cubic root of 1013201121 is about 1004.3811511500.

Adding to 1013201121 its reverse (1211023101), we get a palindrome (2224224222).

The spelling of 1013201121 in words is "one billion, thirteen million, two hundred one thousand, one hundred twenty-one".